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Ca sera oublié dès que le gasoil retombera sous les 2€
u/ThatOtherFrenchGuy — 4 days ago

Hi,
I'm working in a Power line maintenance company and there's one thing I couldn't find the answer to in training material : how did they choose the voltage value of power lines ? It seems a bit random, for example in France : 42kV, 63kV, 90kV, 150kV, 225kV, 400kV. Some countries have 138kV or 375kV.